diff --git a/airflow.cfg b/airflow.cfg
index 2f984f7..8600a02 100644
--- a/airflow.cfg
+++ b/airflow.cfg
@@ -226,7 +226,7 @@ daemon_umask = 0o077
 # SqlAlchemy supports many different database engines.
 # More information here:
 # http://airflow.apache.org/docs/apache-airflow/stable/howto/set-up-database.html#database-uri
-sql_alchemy_conn = postgresql+psycopg2://airflow:airflow@localhost/airflow
+sql_alchemy_conn = postgresql+psycopg2://airflow:airflow@postgres/airflow
 
 # Extra engine specific keyword args passed to SQLAlchemy's create_engine, as a JSON-encoded value
 # Example: sql_alchemy_engine_args = {"arg1": True}